Abstract
The work demonstrates a switchable transflective liquid
crystal display using a cholesteric liquid crystal (CLC) film as a switchable
reflector. The planar and uniformly-lying helical (ULH) states of CLCs support
the reflective and transmissive modes of the display, respectively. Both planar
and ULH textures are stable states, and each can be switched to the other
via the electro-hydrodynamic effect by applying a low-frequency (30 Hz) electrical
field. A transflective display with a CLC as switchable reflector can be utilized
in any currently used display mode, such as TN, MVA, and IPS. Such a display
exhibits high display performance in both indoor and outdoor environments
and low power consumption. It therefore has great potential to be used in
portable information systems.
© 2012 IEEE
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